…e.md

This pull request enhances the android-java-gradle-migration-guide.md file by updating it with the latest Java version (21) and its compatible Gradle version (8.5). The guide now includes detailed instructions on how to check the JDK version using flutter upgrade and flutter doctor --verbose. These improvements are designed to provide a more generalized solution, making it applicable and beneficial for a wider range of developers. By incorporating these updates, we aim to ensure that the guide remains relevant and useful for those working on Android projects with Flutter, offering clear and up-to-date information that can help prevent compatibility issues and streamline the setup process.

…tion-guide.md

Co-authored-by: Shams Zakhour (ignore Sfshaza) <[email protected]>

…tion-guide.md

Co-authored-by: Shams Zakhour (ignore Sfshaza) <[email protected]>

…tion-guide.md

Co-authored-by: Shams Zakhour (ignore Sfshaza) <[email protected]>

…tion-guide.md

Co-authored-by: Shams Zakhour (ignore Sfshaza) <[email protected]>